Dan,
I have only used spinners that I made. I hammered these pins with a small ball pien. Stag is pretty tough stuff, so I go ahead and plan on a pretty good head to hold a little inward pressure. The pin size is 1/8, so the head is slightly larger, but not by much. The dips and grooves in the stag always make it an adventure, but I like the look and I believe it to be very durable. Thanks, Lin